Machine for molding and embossing sheet metal



(No Model.)

y J. W. YATBS. MACHINE FOR MOLDI-NG ANDv EMBOSSING SHEET METAL.

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UNITED STATES PATENT OFFICE.

JOHN w. YA'rEs, or NEW DEGATUE, ALABAMA.

MACHINE FORMOLDING ANDA EMBOSSING SHEET METAL.

SPECIFICATION forming part of Letters Patent No. 464,410, dated December 1, 1891.

Application ne@ May 26,1891. serai N5. 394,154. NQ moda T0 all whom it muy concern.-

Be it known that I, JOHN W. YATES, a citi, zen of theUnited States, residing at New Def catur, in the county of Morgan and State of Alabama, have invented a new and useful Machine for Molding and Embossing Sheet Metal, of which the following is a specification.

This invention relates to machines for molding and embossing sheet metal; and it is an improvement onthe device of this class for which [Letters Patent of the United States No. 438,970 were issued to myself on the 21st day of October, 1890.

My present invention has especial reference to the means for adjusting and supporting the molding-blocks and to the construction of the frame of the machine, as will be hereinafter more fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 5 is asimilar view showing the molding` blocks in a different position. Fig. 6 is a horizontal sectional view taken through the anvil-block or casing, parts having been broken away or removed to show the construction more clearly. Figs. 7 and 8 are de tail views.

Like numerals of reference indicate like parts in all the figures of the drawings.

The base 1 of my improved molding or embossing machine is provided with an upright or anvil block 2, supporting the clamp Said upright is also provided with an upwardly-extending curved arm or bracket 4, carrying the cylinder or casing 5, in which is mounted the vertically-movable weight or hammer 6. The latter has an upwardly-extending yoke 7, which is connected by a link 8 with a lever 9, that extends through a slot 10 in the casing 5, said lever being pivoted at the upper end of the upright 11, rising from the base. Said upright is connected by a bracket 12 with the arm 4, thus steadying and supporting the upright 11. To the under side of the lever 9 is suitably attached a lug 13, which works in a recessV or depression 13 in the upper side of a cup-shaped disk 15. The bracket 12 is provided with a verticallylnovable set-screw 16, having at its upper end a cup-shaped disk 17. Between the'l'atter and the disk 15 is interposed a coiled spring 18, which tends to force the lever 9, carrying the hammer 6, normally in an upward direction. The lug 13, Working in the recess 13 of disk 15, forms an anti-friction bearing, and the tension of the spring 18 may be regulated by the vertically-adjustable disk 17, mounted upon the set-screw 16, as will be readily understood. The lever 9is connected bya link 19 with a treadle 20, pivoted at the lower end of the upright 11 and extending forwardlyin front of the upright 2 to a point where it may be readily reached by the operator.

The clamp 3 is provided at its front and rear ends with flanges 21 and 22 and at its sides with similar ianges 23.` The bottom of said clamp is concave in cross-section, as will be clearly seen in Figs. 4 and 5, and it is provided with a central longitudinal rib 24, having a tongue 25 on its upper side to engage a groove 26 in the under side of the central molding block o r die 27, which is seated upon the said rib. The bottom of the clamp 3 is provided adjacent to the central rib with iianges 28, having triangular or wedge-shaped recesses 29. Slides 30, which are placed in the clamp adjacent to the anges 28, are provided on opposite sides with triangular or wedge-shaped projections adapted to engage,

respectively, the recesses 29 inthe flanges 28 and similar recesses 32 in the under sides of the supporting-blocks 33, which latter are provided on their "upper sides at their'inner edges with flanges 34, against which the outer molding blocks or dies 35 may rest. The front ange 21 of the clamp 3 is provided with setscrews 36, adapted to bear against the front ends of the slides 30, which latter may thus be forced in a rearward direction. The side lianges 23 of the clamp 3 are provided with set-screws 37, adapted to engagethe outerl sides of the outer molding-dies. The adjacent sides of the several molding-dies are provided with longitudinal horizontal grooves 38 toreceive the circular pins 39, which are inter- IOO posed between the said molding-dies and mounted upon the upper side of the upright 2, 'and the clamp containing the molding-dies maybe attached to the lower end of the hammer, as will be readily understood.

, Then the outer molding-dies 35 occu-py a Vertical position adjacent to the'central block 27, straight moldings may be lformed by a succession o.-f` blows of' the hammer upon the sheet metal, which is being fed slowly th rough the machine and for the guidance of which the guides 4I are secured adju'stabl'y to the bracket d by means of set-screws 42. When it is desired to make curved or segmental moldings, the slides 30 are forced in ak rearward direction to any desired extent, thus forcing the supporting-blocks 33 in an upward and outward direction and carrying with them the lower ends of the outer moldingblocks 35. The set-screws 37 are mean-while adjusted so as to hold the upper ends of said molding-dies firmly in contact with the guidepintles 38. It will be readily seen how, by

properad-justment of the molding-dies, moldings of any desired curvature may be produced.y It will also be readily seen how, by the use of proper dies, embossed work may be produced by my improved machine.V

Having thus described my invention, what I claim isl. The combination of the upright having an upwardly extending arm carrying the tubular inclosed guide-casing, the hammer mounted in the latter, a yoke or frame eX- tending upwardly from said hammer within the casing, an upright rising from the base, a lever pivoted at the upper end of said upright extending througha slot in the tubular guide-casing and connected with the upwardly-eXtend-ing hammer-yoke by means of a link pivotally suspended from the top of the yoke, a

bracket connecting the rear upright with the arm supporting the guide-casinga springinterposed between said bracket and the oper;- ating-lever, and a link connecting the latter with a treadle pivoted. at the lower end of the rear upright, substantially as set forth.

2. The combination of the uprights constituting the frame, a bracket connecting the rear upright with an arm extending upwardly from the front upright, the operating-lever j connecting the uprights and carrying a cupshaped disk, and the spring interposed between the said cup-shaped disks, substantially as set forth.

3. The combination of the base Vor anvilblock and the clamp having the curved or concaved bottom and the central rib, the flanged supporting-blocks, means for forcing the latter in an upward and outward direction, the molding-dies mounted upon said supporting-blocks, and the. set-screws mounted in the side flanges of the clamp, substantially as forth.

4. In a device of the class described, the combinationV of the base or anvil-block and the clamp, the set-screws in the: side flanges of the latter, the molding-dies having' horizontally-grooved sides, the pintle-rods. moufn ted in the grooves of the meeting facesof said blocks, and means for forcing thelowe-r ends of the outer molding-blocks; inf an upward and outward direction, substantially as set forth.V

5. rlhe combination. of the base or anvilblock, theA clampl havin-g thek curved or concaved bottom and the flanges provided with triangular or wedge-shaped recesses, thesupporting-blocks having 4triangular or wedgeshaped recesses. in` their under sides and.I provided on their upper sides. with longitudinal lng a recess or indentation engaging said lug, l a set-screw mounted in the horizontal bracket flanges, the slides provided on opposite sides` with triangular projections orl wedges, setscrewsv mounted in the front lian-ge of the casing and bearing against said slides, the molding-blocks mounted upon the supporting-blocks, a central molding-block mounted upon a longitudinal rib in the bottomV of the casing-and set-screwsl mounted in the side flanges of the cla-mp. and bearing against the outer molding-blocks, substantially as set forth. f

In testimony that I claimy the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JOI-IN W. YATES. Vitnesses:

E. J. FENN, W.v P. MULLIGAN.

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